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LT3990-5 - 350mA Step-Down Regulator

Download the LT3990-5 datasheet PDF. This datasheet also covers the LT3990 variant, as both devices belong to the same 350ma step-down regulator family and are provided as variant models within a single manufacturer datasheet.

Description

The LT®3990 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 62V, and consumes only 2.5µA of quiescent current.

Features

  • n Low Ripple Burst Mode® Operation 2.5µA IQ at 12VIN to 3.3VOUT Output Ripple < 5mVP-P n Wide Input Voltage Range: 4.2V to 62V Operating n Adjustable Switching Frequency: 200kHz to 2.2MHz n Integrated Boost and Catch Diodes n 350mA Output Current n Fixed Output Voltages: 3.3V, 5V 2µA IQ at 12VIN n Accurate Programmable Undervoltage Lockout n FMEA Fault Tolerant (MSOP Package) Output Stays at or Below Regulation Voltage During Adjacent Pin Short or When a Pin is Left Floatin.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LT3990_LinearTechnology.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LT3990-5 350mA Step-Down Regulator Analog Devices
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LT3990 350mA Step-Down Regulator Linear Technology
LT3990 350mA Step-Down Regulator Analog Devices
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Other Datasheets by Linear Technology (Analog Devices)

Part Number Description
LT3990-3.3 350mA Step-Down Regulator
LT3991-3.3 1.2A Step-Down Regulator
LT3991-5 1.2A Step-Down Regulator
LT3999 1MHz Push-Pull DC/DC Driver
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
FEATURES n Low Ripple Burst Mode® Operation 2.5µA IQ at 12VIN to 3.3VOUT Output Ripple < 5mVP-P n Wide Input Voltage Range: 4.2V to 62V Operating n Adjustable Switching Frequency: 200kHz to 2.2MHz n Integrated Boost and Catch Diodes n 350mA Output Current n Fixed Output Voltages: 3.3V, 5V 2µA IQ at 12VIN n Accurate Programmable Undervoltage Lockout n FMEA Fault Tolerant (MSOP Package) Output Stays at or Below Regulation Voltage During Adjacent Pin Short or When a Pin is Left Floating n Low Shutdown Current: IQ = 0.7µA n Internal Sense Limits Catch Diode Current n Power Good Flag n Small, Thermally Enhanced 16-Pin MSOP and (3mm × 3mm) DFN Packages APPLICATIONS n Automotive Battery Regulation n Power for Portable Products n Industrial Supplies LT3990/LT3990-3.
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